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. 2002 Mar 1;34(5):708–710. doi: 10.1086/338716

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© 2002 by the Infectious Diseases Society of America

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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CT scan of the sinuses of an adult with viral rhinosinusitis (i.e., the common cold). There is occlusion of the infundibula (arrowheads) and the material adherent to the walls of the maxillary sinuses (arrows). One large air bubble and several small air bubbles are in the material in the left sinus cavity. (Figure reprinted with permission from the New England Journal of Medicine.)